07-21-2014, 08:16 PM
Good luck!
That cap is only for setting the tuning range for the local oscillator to get reception showing at the right places on he dial. The combination of it and the associated coil will establish the correct 88-108 tuning range. So if you figure a mid-setting of say 8pf then any trimmer of 2-10, 3-15, 5-20, etc can work.
Once that's established, the other coil/cap combo will establish peak reception performance for the two ends of the band.
Unfortunately, IMHO, the 68R* series aren't going to set the sky ablaze with superior FM reception. The poor dog doesn't have an RF Amp on the FM band.
That cap is only for setting the tuning range for the local oscillator to get reception showing at the right places on he dial. The combination of it and the associated coil will establish the correct 88-108 tuning range. So if you figure a mid-setting of say 8pf then any trimmer of 2-10, 3-15, 5-20, etc can work.
Once that's established, the other coil/cap combo will establish peak reception performance for the two ends of the band.
Unfortunately, IMHO, the 68R* series aren't going to set the sky ablaze with superior FM reception. The poor dog doesn't have an RF Amp on the FM band.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
